cash , under the table earnings are also great ways to dodge taxes, , and make others pay for the benefits that governments dish out, such as universal healthcare and pensions to the poor retiredcircuit overseerand special pioneers, and other gullible true believers in / of wt inc.
Crypto isn't like cash, as it's traceable.
Imagine being able to see and track exactly where all the money going into a charity is spent for instance? Not just what they tell you they spend things on, what they actually spend it on, because the ledger of transactions is public.
Instead of enabling corruption is makes things more transparent, which is not going to be something that certain organizations and certain governments want.